Ellipsograph attachment for routing-machines.



V. & V. E. BOYLE. ELUPSOGRAPH ATTACHMENT FOR ROUTING MACHINES.

APPLICATION FILED OCT. 16. 1912. 1,226,912. Patented May 22, 1917.

4 SHEETS-SHEET I.

V. & V. E. ROYLE ELLIPSOGRAPH ATTACHMENT FOR ROUTING MACHINES.

APPLICATION FILED OCT. 16, I912. Patented May 22-, 1917.

4 SHEETS-SHEET 2.

BOYLE.

- APPLICATION FILED OCT. 16, i912. 1,226,912 Patented May 22, 1917.

4 SHEETSSHEET 3- v. & v. EJROYLE. ELLIPSOGRAPH ATTACHMENT FOR ROUTING MACHINES.

APPLICATION FILED O CT- 1-6. 1912.

Patented May 22, 1917.

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UNITED STATES PATENT OFFICE.

VERNON BOYLE AND VERNON E. BOYLE, OF PATERSON, NEW JERSEY.

ELLIPSOGRAPH ATTACHMENT FOR ROUTING-MACHINES.

Specification of Letters Patent.

Patented May 22, 1917.

Application filed October 16, 1912. Serial No. 726,069.

ment in Ellipsograph -Attachmen-ts for- Routing-lvlachines, of which the following is a specification.

Our invention relates to an ellipsograph attachment for routing machines, the object being to provide a simple and effective at tachment capable of being applied to routing machines as at present constructed as well as to machines especially constructed with reference thereto, and more particularly to cut and line a photo-engraved plate of elliptical form having the ratio of its major to its minor axis any amount from approximately unity up to two, or more than two if so desired.

A practical embodiment of the invention is represented in the accompanying draw ings, in which,

Figure 1 is a view in side elevation of the upper portion of a routing machine, showing the ellipsograph attachment in position thereon.

.Fig. 2 is a plan view with the cutter supporting arm and parts carried thereby removed,

Fig. 3 is a plan view of the attachment with the plate supporting table removed,

Fig. t is. a vertical section taken in the plane of the line AA of Fig. 2, looking in the direction of the arrows,

Fig. 5 is a vertical section taken in the plane of the line BB of Fig. 2, looking in the direction of the arrows,

Fig. 6 is a vertical section taken in the plane of the line CC of Fig. 2, looking in the direction of the arrows,

Fig. '7 is a vertical section taken in the plane of the line DD of Fig. 2, looking in the direction of the arrows,

Figs. 8, 9, 10 are respectively plan, side partially in section and front views on a larger scale, of one of the clamps for holding the plate in position.

Figs. 11 to 19 inclusive are side and front views of some of the tools that may be used in the attachment.

Fig. 20 is a detail front view of the clamp used in looking the cutter supporting arm to the guide bar, and

Fig. 21 is a plan View of a table for receiving the attachment, when it is to be used without the routing machine, the atilachment being shown in position in dotted mes.

The bed plate of the router is denoted by 1, the pedestal on which it is mounted, by 2, the cutter supporting arm by 3, the cutter holder by 4, and the cutter by 5. These parts may be of any-well known or approved form and suitable well known means may be employed for driving and manipulating the cutter holder.

The attachment is intended to rest on the bed plate 1, beneath the cutter 5. The base frame of the'attachment is a plate, denoted by 6, the preferred shape of which is clearly shown in Fig. 3, and may be described as a body portion of circular form provided with two neck portions denoted respectively by 7 and 8, and a tongue portion 9, the neck portion 7 forming a support for a tool holder for lining tools,'to be hereinafter described, and the tongue 9 and other neck portion 8 being arranged to coact with a clamp 10 to hold the base frame and hence the parts carried thereby fast to the bed plate of the router.

An abutment 11 secured to the bed plate 1 of the router, engages the tongue 9 of the body of the base frame 6, at a point opposite the clamp 10, both the abutment 11 and clamp 10 being arranged to slide along the bed'plate 1 in suitable grooves 12 and 18, the abutment by means of the bar 14 to which it is attached by a shank 15, shown in dotted lines Figs. 1, 2, 3; and the clamp 10 by means of a T-bolt, the head of which fits in the groove 13 and the stem of which extends up through the clamp 10 and receives a wheel nut 16 for locking the clamp in position.

At the central portion of the base frame 6, a keeper bar 17 is secured to a head 18 of a screw-threaded stem 19, by means of screws 20, on which stem an undercut nut 21 is screwed up tightly to the head 18, whereby the bar 17, together with its stem and nut, may rotate over the face of the base frame 6, in its bearing in the base frame, while held against movement away from the surface of the base frame.

The opposite edges of the bar 17 are beveled or undercut, as shown at 22, 23, Fig. 4, to interlock in sliding engagement with a pair of ways 24, 25.

The body of the bar 17 is spaced from the surface of the base frame 6, a distance sufficient to admit between them the circular former disk 26, the latter being provided with an elongated radial slot 27, which embraces and has a width corresponding to the head 18 of the stem 19 on the bar 17. The disk 26 extends also between the ways 24, 25, and the base frame 6. The disk 26 may be moved along the face of the base frame 6, from a position concentric with the stem of the bar 17, to a position eccentric thereto, the amount or extent of the eccentricity depending upon the length of the slot 27, and may be locked in its adjusted position by means of a thin bar or adjusting tongue 28 fastened securely to the disk at one end and extending along a recess,29 in the neck 7 of the base frame 6, toward the margin of the base frame where it is provided with a tail nut 30 on a bolt 31, the head 32 of which slides in a groove 33 in the base frame 6, and the stem of which extends upwardly through a slot 34 in the base frame and through the tongue 28.

The edge of the tongue 28 is conveniently provided with a scale 35, the units of which correspond to a predetermined amount of difference between the major and minor axes of the ellipse to be cut, and a mark 36, on the base frame 6 in proximity to the scale, is conveniently employed in adjusting the tongue and hence the former disk to produce ellipses more or less elongated.

Guides 37 and 38 bear against the periphery of the former disk 26, at points diametrically opposite, the said guides being fixed to the ways 24, 25.

The table for supporting the plate to be cut is denoted by 39, and is provided with handles 40 for conveniently rotating it. It is made fast to the ways 24, 25, and to the guides 37, 38, and is provided with beveled or undercut grooves 41, 42, extending diametrically across its face at right angles to each other for receiving clamps 43, 44, and 46, for holding the plate 47 in position to be out by the cutter 5, or to be lined by the lining tool. Each of these clamps consists of a base 48, beveled to fit the grooves 41, 42, a body portion 49 uprising therefrom, an overhanging arm 50, and a clamping screw 51 extending downwardly through the arm 50 and engaging the plate 47. The end of the shank of the clamping screw 51, which engages the plate, is provided with a setting point and scribe 51*, which point will, when the screw is forced toward the plate, pierce the plate, and when the clamp is withdrawn from the edge of the plate, after the screw is loosened to partially remove the point, will score the plate, forming a guide line which will permit the operator, should he so desire, to remove the plate from the table and replace it in its original position with perfect accuracy by centering the setting point on the guide line and moving the clamp until the point reaches the hole which it previously pierced in the plate.

A lining tool 52 is secured to a turret head 53, by a set screw 54, which turret is rotatively mounted on a stud bolt 55 screwed to a dovetailed bar 56. lVhile we have shown only one tool in the turret head, it will be understood that other tools may be placed in the sockets 57 around the edge of the turret head 53, such as shown on an enlarged scale in Figs. 13 to 19 inclusive. Furthermore, we propose to locate around the periphery of the turret head, an odd number of sockets 57, spaced an even distance apart. By so locating the sockets and tools, we are permitted to pass the cutter bar over the tool holder in close proximity thereto without disturbing the tool in use, and at the same time locate the cutter bar as near as may be to the plane of the work to guard against any chattering of the tool.

The dovetailed bar 56 is fitted to slide in an arm 58 hinged at 59, to a bracket 60 secured to the neck portion 7 of the base frame, and is held yieldingly in elevated position by means of a flat spring 61, made fast to the bracket at one end by screws 61*, its free end bearing on the under side of the arm 58, near the free end thereof.

The arm 58 is provided at its outer end with thumb screws 62 engaging an adjustable gib 63 for locking the bar 56 to the arm 58. The edge of the bar 56 is conveniently provided with a scale.64, subdi vided to determine the major axis of the ellipse to be cut, and a mark 65 on the arm 58 in proximity to the scale, is employed in adjusting the bar and hence the turret head carrying the lining tool to out ellipses having said determined major axis.

To hold any one of the tools in its working position in the turret head, we provide a plunger 66 fitted to slide in the bar 56, having a tooth 67 on its free end engaging a notch 68 on the back of the turret head and a spring 69 tending to force the plunger into. the notch 68. To release the turret head, we employ a pinion 70, formed on a shaft 71 and located in the bar 56, at right angles to the plunger and meshing with a rack 72 on the plunger 66. A crank 73 is secured to the shaft 71, for rotating the pinion and drawing back the .rack and plunger.

In operation, the plate 17 having been placed in position on the table and the tongue 28 having been manipulated to set the former disk to the desired degree of ec centricity, and the bar 56 carrying the turret head also having been set to determine the desired length of major axis, the tool is then pressed to the plate against the tension of spring 61, the table 39 with the plate thereon is rotated by the hand of the opera-. tor and guided by the former disk, which will cause the cutter to cut an elliptical line in the plate.

After the desired number of lines are cut in the plate and the operator wishes to rout or out an elliptical path in or through the plate, the arm carrying the bar 56, turret head and tool, is swung up out of the way as shown in dotted lines inFig. 5, and the cutter 5 brought into position, when the table 39 is again rotated by the operator and the plate will travel and be cut in the same elliptical path or in a path parallel thereto. To secure a proper relation between the lining and cutting of a plate, we provide as one of the tools that may be mounted in the turret head, a gage 74:, as shown on a larger scale in Figs. 17 to 19 inclusive, which is brought to its operative position and the routing cutter lowered until it touches the gage, as shown in dotted lines in Fig. 17, in which position the cutter 5 is ready to cut in its own elliptical path and parallel to the paths made by the lining tool.

It will be understood that the turret head must either be swung up out of the way of the cutter 5 as shown in dotted lines in Fig. 5, or the barslid back to the extreme left in the arm 58 when using the cutter 5, and that the cutter 5 must be thrown out of the way when the lining tool is used.

Various tools may be used and placed in the turret head, such, for instance, as the lining tool shown in front and side views in Figs. 11 and 12, which are enlarged views of the tool shown in operation in Figs. 1, 2, 1 and 5, or a cutting knife, as shown in front and side views in Figs. 13 and 1 1, or a ruling pen as shown in front and side views in Figs. 15 and 16.

To further provide that the tool holder 53 for the tools will sit low and permit the cutter bar to pass over the tools not in use, we mount the tool holder 53 on the bar 56 at about an. angle of 30 with respect to the table 39, and the sockets 57 located so that when the tool to be used is in position, the socket will assume a horizontal position and parallel to the path in which the bar 56 slides, thereby placing the tool perpendicular to the plate to be lined.

Then using the routing cutter 5, it is necessary to lock the cutter supporting arm 3 to a guide bar 75, which bar and its operating mechanism is of well known construction shown for example, in Letters Patent No. M2826, dated December 16, 1890. The means which we have shown for locking the cutter supporting arm 3 to the guide bar 75, is as follows. A U-shaped clamp 7 6 is adj ustably locked to the guide bar 75 by thumb screws 77, which U-shaped clamp is provided witha vertical socket piece 78. A fork 79 comprises a shank 80 fitted to rock in the socket piece 7 8, and two uprising members 81, 82, the member 82 having journaled in it an adjusting screw 83 reduced at one end 84 which is free to slide laterally in the member 82. The member 81 is provided with a split bearing 85, which looks the threaded portion of the adjusting screw 83, by means of a thumb screw 86, when so I des red.

A clamp 87 is locked to the cutter supporting arm 3, by a thumb screw 88, and has a screw-threaded engagement with the adjusting screw 83, between the members 81,

82, of the fork 79. The purpose of the adj ustment of the cutter supporting arm 3 is to enable the operator to regulate the width of the path of the cutter, or give the cutter the slightest degree of movement, which could not be given if the cutter supporting arm were free.

The attachment is simple to operate, it has an extended scope in respect to varying the elongation of the ellipse and it may be readily applied to and removed from routing machines in general use, or the attachment maybe used without the routing machine, in which instance it would rest upon a table such as is shown in Fig. 21 of the drawings.

It is obvious that slight changes might be resorted to in the form and arrangement of the several parts without departing from the spirit and scope of our invention as determined by the claims; hence we do not wish to limit ourselves strictly to the structure herein set forth, but i What we claim is:

1. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, provided with dove tailed grooves arranged at intervals, plate clamps engaging said grooves and thumb screws having setting points depending therefrom for engaging a plate mounted on said table, a tool-holder carried by said base frame, and means for directing the rotary movement of the table in different elliptical paths beneath the tool-holder.

, 2. In an ellipsograph lining machine, a plate clamp for holding a plate in position to be operated upon, said clamp being provided with a setting point adjustable in said clamp toward and away from the plate for piercing the plate to provide for accurate replacement of the plate.

3. In an ellipsograph lining machine, a plate clamp for holding the plate in position to be operated upon, said clamp including a screw provided with a setting scribing point depending therefrom in position to pierce the plate when the screw is turned to clamp and to score the plate when the screw is loosened and clamp withdrawn, for accurately replacing the plate.

4. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a tool-holder carried by said base frame, a tongue sliding in said base frame, a disk secured to said tongue and mechanism cooperating with said tongue and disk whereby the table may be rotated in an elliptical path.

5. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a tool-holder carried by said base frame, a tongue sliding in said base frame, a disk secured to said tongue, a slot in said disk, a bolt engaging said slot, and

mechanism cooperating with said tongue and disk whereby the table may be rotated in an elliptical path.

6. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a tool-holder carried by said base frame, a tongue sliding in said base frame, a disk secured to said tongue and sliding in guides, a slot in said disk, a bolt engaging said slot, a bar secured to said bolt and engaging beveled ways fixed to said table and means in said base frame engaging said bolt whereby the table may be rotated in an elliptical path.

7. An ellipsograph lining machine, comprising a base frame, a table rotatably mounted thereon, a tool-holder carried by saidbase frame, a tongue sliding in said base frame, means for locking said tongue to the base frame, a disk secured to said tongue, guides for said disk, a slot in said disk, a

bolt engaging said slot, a bar secured to said bolt and engaging beveled ways fixed to said table, and a nut in said base frame engaging said bolt, whereby the table may be rotated in different elliptical paths.

8. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a swinging arm carried by said base frame, a bar slidably mounted in said arm, means for locking said bar to said arm, a tool holder carried by said bar, and means for directing the rotary movement of the table in an elliptical path.

9. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a swinging arm carried by said base frame, a bar slidably mounted in said arm, locking means carried by said arm for locking said bar to said arm, a toolholder carried by said bar, yielding means for holding the tool-holder away from the table, and means for directing the rotary movement of the table in an elliptical path.

10. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a swinging arm carried by said base frame, a bar slidably mounted in said arm, means for locking said bar to said arm, a multiple tool-holder mounted to rotate on said bar, means for locking the said tool-holder in position for use, yielding means for holding the said tool-holder away from the table, and means for directing the rotary movement of the table in an elliptical path beneath the tool-holder.

11. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a bracket secured to said base frame, an arm mounted to swing therein, a bar having a sliding engagement with said arm, means for locking said bar to said arm, a multiple tool-holder mounted to rotate on said bar, means for looking the said tool-holder in position for use, means for manually unlocking the tool-holder to permit rotation, yielding means for holding the tool-holder away from the table, and means for directing the rotary movement of the table in an elliptical path beneath the tool-holder.

12. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a bracket secured to said base frame, an arm mounted to swing therein, a bar having a sliding engagement with said arm, means for locking said bar to said arm, a tool-holder mounted at an angle on said bar, yielding means for holding the tool-holder away from the table, and meansfor directing the rotary movement ofthe table in an elliptical path beneath the toolholder.

13. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a bracket secured to said base frame, an arm mounted to swing therein, a bar having a sliding engagement with said arm, means for locking said bar to said arm, a multiple tool-holder mounted to rotate at an angle on said bar, yielding means for holding the tool-holder away from the table, and means for directing the rotary movement of the table in an elliptical path beneath the tool-holder.

14. An ellipsograph lining machine comprising a base frame, a table rotatively mounted thereon, a bracket secured to said base frame, an arm mounted to swing therein, a bar having a sliding engagement with said arm, means for locking said bar to said arm, a multiple toobholder mounted to rotate at an angle on said bar and provided as our invention, We have signed our names with an odd number of tools spaced an even in presence of two Witnesses, this 14th day 10 distance apart, yielding means for holding of October 1912.

the tool-holder away from the table and VERNON BOYLE. 5 means for directing the rotary movement of VERNON E. BOYLE.

the table in an elliptical path beneath the Witnesses: tool-holder. HEBER BOYLE,

In testimony, that We claim the foregoing F. J. BRADLEY.

Copies of this patent may be obtained for five cents cash, by addressing the Commissioner of Patentsv Washington, D. 0." 

